Models WPSB-3D WPSB-3DP WPSB-4D WPSB-4DP WPSB-5D WPSB-5DP WPSB-6D WPSB-6DP WPSB-7D WPSB-7DP WPSB-8D WPSB-8DP WPSB-9D WPSB-9DP WPSB SERIES II GAS-FIRED HOT WATER BOILERS Tested For 50 psi. ASME Working Pressure An ISO 9001-2008 Certified Company 2201 Dwyer Avenue, Utica NY 13501 web site: www.ecrinternational.com P/N 240009047, Rev. A [04/2012]
DIMENSIONS DIMENSIONS CONTROL BOILER MODEL NUMBER Dimensions DIMENSIONS (INCH.) FLUE DIAMETER A WIDTH Boiler Volume Gallon WPSB-3 5 11¼ 6.3 WPSB-4 6 14½ 8.1 WPSB-5 6 17¾ 9.9 WPSB-6 7 21 11.7 WPSB-7 7 24¼ 13.5 WPSB-8 7 27½ 15.3 WPSB-9 7 30¾ 17.2 Add 5½ to height for vent Damper. 2
BOILER RATINGS AND CAPACITIES Table 1 - Ratings and Capacities NATURAL GAS PROPANE GAS AFUE BOILER MODEL NUMBER (1) Input Heating (3) Capacity Mbh (3) Mbh (2) NET AHRI RATING Water, (3) Mbh HEATING INPUT CAPACITY (3) Mbh (3) MBH (2) NET AHRI RATING (3) Mbh INTERMITTENT IGNITION WITH VENT DAMPER WPSB-3 75 63 55 70 59 51 84.0 WPSB-4 112.5 94 82 105 88 77 84.0 WPSB-5 150 126 110 140 118 103 84.1 WPSB-6 187.5 157 137 175 147 128 84.1 WPSB-7 225 188 163 210 176 153 84.0 WPSB-8 262.5 220 191 245 206 179 83.9 WPSB-9 299 251 218 280 235 204 83.7 For altitudes above 2,000 ft. rating should be reduced at the rate of 4% for each 1,000 ft. above sea level. Heating Capacity is based on D.O.E. (Department of Energy) test procedure. (1) Add model number suffix P for Propane. (2) Net AHRI Water rating shown based on piping and pickup allowance of 1.15. Consult manufacturer before selecting boiler for installations having unusual piping and pickup requirements, such as intermittent system operation, extensive piping systems, etc. (3) MBH = 1,000 Btuh = British Thermal Unit Per Hour - Ratings marked Net AHRI Ratings indicate amount of remaining heat input used to heat radiation or terminal units. Net AHRI Ratings shown are based on allowance of 1.15 in accordance with factors shown on AHRI Standard as published by The Hydronics Institute. - Selection of boiler size should be based upon Net AHRI Rating being equal to or greater than calculated heat loss of the building. - Consult manufacturer before selecting boiler for installations having unusual piping and pickup requirements. BOILERS FOR USE AT HIGH ALTITUDE Boiler is factory equipped for use at altitudes of 0-2,000 feet above sea level. For use at altitudes above 2,000 feet above sea level, input ratings are reduced by change in main burner orifice size. For altitudes above 2,000 feet above sea level, input ratings should be reduced at rate of 4% for each 1,000 feet above sea level. Consult National Fuel Gas Code (NFPA54/ANSI Z223.1-latest edition), or manufacturer for correct orifice sizing information. 3
TABLE OF CONTENTS Locating The Boiler...5 Ventilation & Combustion Air...6 Connecting Supply And Return Piping...7 Chimney And Vent Pipe Connection... 11 Vent Damper Operation... 13 Gas Supply Piping... 14 Electrical Wiring... 15 Wiring Diagrams... 16 Starting Your Boiler... 17 Lighting Instructions... 18 Operating Your Boiler... 19 Operating The Boiler - System Start-Up... 21 Service Hints... 23 Maintaining Your Boiler... 24 Equipment And Optional Accessories... 25 SAFETY SYMBOLS & WARNINGS The following defined symbols are used throughout this manual to notify the reader of potential hazards of varying risk levels.! DANGER Indicates a hazardous situation which, if not avoided, WILL result in death or serious injury KEEP THIS MANUAL NEAR BOILER RETAIN FOR FUTURE REFERENCE IMPORTANT: Read the following instructions COMPLETELY before installing!!! WARNING Fire, explosion, asphyxiation and electrical shock hazard. Improper installation could result in death or serious injury. Read this manual and understand all requirements before beginning installation.! WARNING Keep boiler area clear and free from combustible materials, gasoline and other flammable vapors and liquids. DO NOT obstruct air openings to the boiler room. Modification, substitution or elimination of factory equipped, supplied or specified components may result in personal injury or loss of life. TO THE OWNER - Installation and service of this boiler must be performed by a qualified installer. TO THE INSTALLER - Leave all instructions with boiler for future reference. When this product is installed in the Commonwealth of Massachusetts the installation must be performed by a Licensed Plumber or Licensed Gas Fitter.! WARNING Indicates a hazardous situation which, if not avoided, could result in death or serious injury.! CAUTION Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury. NOTICE Used to address practices not related to personal injury. 4
LOCATING THE BOILER! WARNING Improper installation, adjustment, alteration, service or maintenance could result in death or serious injury. 1. Installation must conform to requirements of authority having jurisdiction or, in absence of such requirements, to the National Fuel Gas Code, ANSI Z223.1/NFPA 54. 2. Where required by authority having jurisdiction, installation must conform to the Standard for Controls and Safety Devices for Automatically fired Boilers, ANSI/ASME CSD-1. 3. Boiler series is classified as Category I. Vent installation shall be in accordance with "Venting of Equipment," of the National Fuel Gas Code, ANSI Z223.1/NFPA 54, or applicable provisions of local building codes. 4. Boiler installed in building under construction; take care to insure clean combustion air supply during construction process. Airborne particulates from drywall dust and fiberglass insulation can clog burner ports and cause incomplete combustion and sooting. 5. Boiler shall be installed such that gas ignition system components are protected from water (dripping, spraying, rain, etc.) during appliance operation and service, (circulator replacement, condensate trap, control replacement, etc.). 6. Locate boiler on level, solid base as near chimney as possible and centrally located with respect to heat distribution system as practical. 7. When installed in utility room, door should be wide enough to allow largest boiler part to enter, or to permit replacement of another appliance such as water heater. 8. Accessibility clearances take precedence over fire protection clearances. An 18-inch clearance should be maintained on any side where passage is required to access another side for cleaning, servicing, inspection or replacement of any part that may need attention. An 18-inch clearance is recommended on the control side for servicing. 9. Locate equipment which allows the facilities for ventilation satisfactory combustion of gas, proper venting, and maintenance of ambient temperature at safe limits under normal conditions of use. Equipment shall be located so as not to interfere with proper circulation of air. When normal infiltration does not provide the necessary air, outside air shall be introduced (See Fresh Air for Combustion ). 10. Keep air passages free of obstructions. Ventilation and combustion air must enter boiler room without restrictions.! WARNING Fire hazard. Do not install boiler on combustible flooring or carpeting. Failure to follow these instructions could result in death or serious injury. 11. FOR INSTALLATION ON NON-COMBUSTIBLE FLOORS ONLY - For installation on combustible flooring special base must be used. (See Replacement Parts Section.) Do Not install Boiler on carpeting. Minimum Clearance Dimensions Table 2 - Minimum Clearances Alcove Top 6 (152mm) Rear 6 (152mm) Control Side 7 (178mm) Opposite Side 6 (152mm) Front 18 (457mm) Flue/Vent Connector 6 (152mm) Near Boiler Piping 2 (51mm) NOTE: Greater clearances for access should supersede fire protection clearances. * Definition of Alcove is three sided space with no wall in front of boiler. ANSI standard for alcove is 18 inches from front of appliance to leading edge of side walls as shown below. Minimum Clearances to Combustible Construction (as seen from above) 6" 6" BOILER Front 18" 7" Control Side 5
VENTILATION & COMBUSTION AIR Provide combustion air and ventilation air in accordance with the section Air for Combustion and Ventilation, of the National Fuel Gas Code, ANSI Z223.1 / NFPA 54, or applicable provisions of local building codes. Provide make-up air where exhaust fans, clothes dryers, and kitchen ventilation equipment interfere with proper operation. National Fuel Gas Code recognizes several methods of obtaining adequate ventilation and combustion air. Requirements of the authority having jurisdiction may override these methods. Engineered Installations. Must be approved by authority having jurisdiction. Mechanical Air Supply. Provide minimum of 0.35 cfm per Mbh for all appliances located within space. Additional requirements where exhaust fans installed. Interlock each appliance to mechanical air supply system to prevent main burner operation when mechanical air supply system not operating. All Indoor Air. Calculate minimum volume for all appliances in space. Use a different method if minimum volume not available. A. Standard Method. Cannot be used if known air infiltration rate is 0.40 air changes per hour. See Table 3 for space with boiler only. Use equation for multiple appliances. Volume 50 ft 3 x Total Input [Mbh] B. Known Air Infiltration Rate. See Table 3 for space with boiler only. Use equation for multiple appliances. Do not use an air infiltration rate (ACH) greater than 0.60. Volume 21 ft 3 ACH x Total Input [Mbh] C. Refer to National Fuel Gas Code for opening requirements between connected indoor spaces. All Outdoor Air. Provide permanent opening(s) communicating directly or by ducts with outdoors. A. Two Permanent Opening Method. Provide opening commencing within 12 inches of top and second opening commencing within 12 inches of bottom of enclosure. Direct communication with outdoors or communicating through vertical ducts. Provide minimum free area of 1 in² per 4 Mbh of total input rating of all appliances in enclosure. Communicating through horizontal ducts. Provide minimum free area of 1 in² per 2 Mbh of total input rating of all appliances in enclosure. B. One Permanent Opening Method. Provide opening commencing within 12 inches of top of enclosure. Provide minimum clearance of 1 inch on sides/back and 6 inches on front of boiler (does not supersede clearance to combustible materials). Refer to National Fuel Gas Code for additional requirements for louvers, grilles, screens and air ducts. Combination Indoor and Outdoor Air. Refer to National Fuel Gas Code for application information. National Gas and Propane Installation Code Requires providing air supply in accordance with: Section 8.2 and 8.3 when combination of appliances has a total input of up to and including 400 Mbh (120 kw). Section 8.4 when combination of appliances has total input exceeding 400 Mbh (120 kw). Refer to Natural Gas and Propane Installation Code for specific air supply requirements for enclosure or structure where boiler is installed, including air supply openings and ducts. Table 3 - Minimum Room Volume, Indoor Air Only* Input Mbh Standard Known Air Infiltration Rate Method ACH (Air Changes Per Hour) Method 0.1 0.2 0.3 0.4 0.5 0.6 75 3750 15750 7875 5250 3938 3150 2625 112.5 5625 23625 11813 7875 5906 4725 3938 150 7500 31500 15750 10500 7875 6300 5250 187.5 9375 39375 19688 13090 9844 7875 6563 255 11250 47250 23625 15750 11813 9450 7875 262.5 13125 55125 27563 18375 13781 11025 9188 299 14950 62790 31395 20930 15698 12558 10465 * Table values based on boiler only. Add volume for any additional appliances. 6
CONNECTING SUPPLY AND RETURN PIPING! WARNING Burn or Scald Hazard. Discharge line shall be installed to relief valve outlet connection to avoid burns, scalding, or water damage due to discharge of steam and/or hot water during operation. Discharge line shall: Connect to relief valve outlet and piped down to safe point of disposal. Check local codes for maximum distance from floor or allowable safe point of discharge. Be of pipe size equal to or greater than that of the relief valve outlet over the entire length of discharge line. Have no intervening shutoff valve between safety relief valve and discharge to atmosphere (do not plug or place any obstruction in discharge line. Terminate freely to atmosphere where any discharge will be clearly visible and at no risk of freezing. Allow complete drainage of the valve and the discharge line. Be independently supported and securely anchored to avoid applied stress on the relief valve. Be as short and straight as possible. Terminate with plain end (not threaded). Be constructed of material suitable for exposure to temperatures of 375 F (191 C); or greater. Refer to local codes and appropriate ASME Boiler and Pressure Vessel Code for additional installation requirements. Figure 1 - Safety Relief Valve DISCHARGE LINE RELIEF VALVE Check local codes for maximum distance from floor or allowable safe point of discharge. 7
CONNECTING SUPPLY AND RETURN PIPING! WARNING Burn and scald hazard. Safety relief valve could discharge steam or hot water during operation. Install discharge piping per these instructions. 1. Install discharge piping from safety relief valve. See Warning, Page 7. 2. Install temperature pressure gauge. Apply pipe sealant to threads on shaft of gauge. Thread gauge into supply water tee. See Figure 2. NOTICE Do not tighten gauge by hand. Gauge should be tightened using crescent wrench or 9/16 open end wrench. See Figure 2. 3. Connect supply and return lines to boiler. Connections may require additional fittings and parts, as shown on diagrams. 4. Boiler is equipped with 1 1/4 supply and return connections on both left and right sides of boiler. Figure 2 - Temperature Pressure Gauge Verify clean water supply is available to water inlet valve. Install sand strainer when water supply is from a well or pump. Install hot water boiler above radiation level or as required by Authority having jurisdiction install low water cutoff device at time of installation. Periodic inspection is necessary, as is flushing of float type devices, per manufacturers specific instruction. FOR USE WITH COOLING UNITS A. Boiler used in connection with refrigeration system, must be installed so that chilled medium is piped in parallel with heating boiler. Appropriate valves must be used to prevent chilled medium from entering heating boiler. See Figure 4 page 9. B. Boiler connected to heating coils located in air handling units where they may be exposed to refrigerated air circulation, piping system shall be equipped with flow control valves or other automatic means to prevent gravity circulation of boiler water during cooling cycle. LOW WATER TEMPERATURE AND LARGE WATER CONTENT SYSTEM (See Figures 5 and 6, Page 10.) Significant condensation may form in boiler and/or venting system if boiler is operated for long period of time with return temperatures of less than 120 F. Condensate is corrosive and can cause severe damage to boiler and venting system. Minimum design return water temperature to prevent condensation in boiler and venting is 120 F. Minimum high limit setting is 140 F. 1. Boiler used in heating system where design water temperatures below 140 F are desired (e.g. radiant floor heating), 4-way mixing valve or suitable alternative is required to prevent low temperature low return water from entering boiler. Follow mixing valve manufacturer s instructions. 2. Boiler connected to system having large water content (such as former gravity system), install system bypass. See Figures 5 and 6, page 10. 3. Boiler water reset control is used to operate boiler, minimum reset supply water temperature setpoint must be at least 140 F, unless mixing valve is used as in (1) above. 8
Figure 3- Typical Hot Water Piping CONNECTING SUPPLY AND RETURN PIPING Figure 4 - Chilled Water Piping 9
CONNECTING SUPPLY AND RETURN PIPING BYPASS PIPING REQUIRED FOR HIGH MASS (LARGE WATER CONTENT) SYSTEMS Figure 5 - Bypass Piping - Circulator On Supply Figure 6 - Bypass Piping - Circulator On Return 10
CHIMNEY AND VENT PIPE CONNECTION Boilers connecting to gas vents or chimneys, vent installations shall be in accordance with Venting of Equipment, of the National Fuel Gas Code, ANSI Z223.1/NFPA 54, or applicable provisions of local building codes. Check Your Chimney It must be clean, right size, properly constructed and in good condition. Chimney Sizing Chimney sizing, and vent installation must be in accordance with the National Fuel Gas Code, ANSI Z223.1/NFPA 54, or applicable provisions of local building codes. This is a high efficiency boiler with low stack temperature. Following recommendations are in addition to requirements of the National Fuel Gas Code. 1. Type B double wall vent pipe is recommended for vent connector. Single wall vent connectors should not be used unless following conditions are true: a) Except for basement, boiler is not installed in unheated space. b) Total horizontal portion of vent connector, not including elbows is less than 5 feet in length. 2. Outside chimneys (i.e. chimneys exposed to outdoors below roof line) should not be used unless they are: a) enclosed in a chase, or b) lined with type B vent pipe, or listed flexible vent liner, or other certified chimney lining system. 3. Where possible it is recommended to common vent boiler and water heater. 4. For multiple boiler installations, consult boiler manufacturer for venting recommendations. Connecting The Vent Damper And Vent Connector Refer to Dimensions, page 2 for size and location of vent (flue opening). NOTICE Damper blade on furnished vent damper has 1/2 square inch hole (approximately 3/4 diameter). Boilers equipped with intermittent ignition, hole should be plugged by using plug supplied with vent damper. 1. Position furnished vent damper on top of flue outlet collar. Fasten damper securely to flue outlet collar with sheet metal screws. Verify damper blade has clearance to operate inside of diverter. Do not modify either draft diverter or vent damper during installation. As An Option Damper may be installed in a horizontal or vertical position, closer to flue outlet collar preferred. See Figures 7, 8 and 9, and Vent Damper Instructions. 2. Install vent damper to service only single boiler for which it is intended. Damper position indicator shall be in visible location following installation. Locate damper so it is accessible for servicing. 3. Damper must be in the open position when appliance main burners are operating. 4. Boiler is equipped with factory wired harness that plugs into vent damper. 5. Slope pipe up from boiler to chimney not less than 1/4 per foot. 6. Run pipe as directly as possible with as few elbows as possible. 7. Do not connect to fireplace flue. 8. End of vent pipe must be flush with inside face of chimney flue. Use a sealed-in thimble for chimney connection. 11 Sections of vent pipe should be fastened with sheet metal screws to make piping rigid. Horizontal potions of vent system must be supported to prevent sagging. Use stovepipe wires every 5 to support pipe from above. If vent pipe must go through crawl space, double wall vent pipe should be used. Where vent pipe passes through combustible wall or partition, use ventilated metal thimble. Thimble should be 4 inches larger in diameter than vent pipe. Minimum Vent Pipe Clearance Wood and other combustible materials must not be closer than 6 from any surface of single wall metal vent pipe. Listed Type B vent pipe or other listed venting systems shall be installed in accordance with their listing.
CHIMNEY AND VENT PIPE CONNECTION Removing Existing Boiler From Common Venting System When an existing boiler is removed from common venting system, common venting system is likely to be too large for proper venting of appliances remaining connected to it. At time of removal of existing boiler, following steps shall be followed with each appliance remaining connected to the common venting system placed in operation, while other appliances remaining connected to common venting system are not in operation. 1. Seal any unused openings in the common venting system. 2. Visually inspect the venting system for proper size and horizontal pitch and determine there is no blockage or restriction, leakage, corrosion and other deficiencies which could cause an unsafe condition. 3. Insofar as is practical, close all building doors and windows and all doors between the space in which the appliances remaining connected to the common venting system are located and other spaces of the building. Turn on clothes dryers and any appliance not connected to the common venting system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, so they will operate at maximum speed. Do not operate a summer exhaust fan. Close fireplace dampers. 4. Place in operation the appliance being inspected. Follow the lighting instructions. Adjust thermostat so appliance will operate continuously. 5. Test for spillage at the draft hood relief opening after 5 minutes of main burner operation. Use the flame of a match or candle, or smoke from a cigarette, cigar or pipe. 6. After it has been determined that each appliance remaining connected to the common venting system properly vents when tested as outlined above, return doors, windows, exhaust fans, fireplace dampers and any other gas-burning appliance to their previous conditions of use. 7. Any improper operation of the common venting system should be corrected so the installation conforms with the National Fuel Gas Code, ANSI Z223.1/NFPA 54. When re-sizing any portion of the common venting system, the common venting system should be re-sized to approach the minimum size as determined using the appropriate tables in Chapter 13 of the National Fuel Gas Code, ANSI Z223.1/NFPA 54. Vent connectors serving appliances vented by natural draft shall not be connected into any portion of mechanical draft systems operating under positive pressure. 12
VENT DAMPER OPERATION Figure 7 Figure 8 For safe, efficient operation, vent damper and all flue product carrying areas of appliance must be checked annually, with particular attention given to deterioration from corrosion or other sources. If you see corrosion or other deterioration, contact your heating contractor for repairs. Check vent damper operation as follows: When boiler is off, check vent damper positions indicator points to closed position. See Figure 9. Turn thermostat or controller up to call for heat and check vent damper indicator points to open position. See Figure 9. Turn thermostat or controller down again and check damper position indicator returns to closed position. For further information, and vent damper troubleshooting guide, refer to manual packaged with vent damper. Inspect vent damper at least once a year by a qualified service technician. Figure 9 - Vent Damper Position Indicator Vent Damper Manual Operation Vent damper may be placed in open position to permit burner operation by using HOLD DAMPER OPEN switch, located on damper controller. Thermostat will control burner firing as before, while damper will remain open. DO NOT turn damper open manually or motor damage will result. Set switch to AUTOMATIC OPERATION to close vent damper during burner off cycle. 13
GAS SUPPLY PIPING! CAUTION WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance. Do not touch any electrical switch; do not use any phone in your building. Immediately call your gas supplier from a neighbor s phone. Follow gas supplier s instructions. If you cannot reach your gas supplier, call the fire department. Check Gas Supply Gas pipe to your boiler must be correct size for length of run and for total BTU per hour input of all gas utilization equipment connected to it. Be sure your gas line complies with local codes and gas company requirements. See Table 4 for proper pipe size. Connecting The Gas Piping Gas line enters boiler from right side. Use only piping materials and joining methods listed as acceptable by the authority having jurisdiction, or in the absence of such requirements, by the National Fuel Gas Code, ANSI Z223.1/NFPA 54. Use pipe joint compound suitable for LP gas on male threads only. Use ground joint unions. Install sediment trap upstream of gas controls. Use two pipe wrenches when making connection to gas valve to keep it from turning. Install manual shut-off valve in vertical pipe about 5 feet above floor. Tighten all joints securely. Propane gas connections should only be made by licensed propane installer. Two-stage regulation should be used by propane installer. Propane gas piping should be checked out by propane installer. Pressure test at 1/2 psig (3.5 kpa) or less. Isolate boiler from gas supply system by closing manual gas shutoff valve. Locate leakage using gas detector, noncorrosive detection fluid, or other leak detection method acceptable to authority having jurisdiction. Do not use matches, candles, open flames, or other methods providing ignition source. Correct leaks immediately and retest. Table 4 - GAS PIPE SIZES NATURAL GAS Pipe Capacity - BTU Per Hour Input Includes Fittings Length of Pipe - FT ½ ¾ 1 1¼ 20 92,000 190,000 350,000 625,000 40 63,000 130,000 245,000 445,000 60 50,000 105,000 195,000 365,000 PROPANE GAS Pipe Capacity - BTU Per Hour Input Includes Fittings Length of Copper Tubing * Iron Pipe Pipe - FT ⅝ ¾ ½ ¾ 20 131,000 216,000 189,000 393,000 40 90,000 145,000 129,000 267,000 60 72,000 121,000 103,000 217,000 * Outside diameter Measure length of pipe or tubing from gas meter or propane second stage regulator. Figure 10 - Gas Piping CHECKING GAS PIPING! DANGER Fire Hazard. Do not use matches, candles, open flames, or other methods providing ignition source. Failure to comply will result in death or serious injury. Pressure test boiler and gas connection before placing boiler in operation. Pressure test over 1/2 psig (3.5 kpa). Disconnect boiler and its individual gas shutoff valve from gas supply system. 14
ELECTRICAL WIRING! WARNING Electrical shock hazard. Turn OFF electrical power supply at service panel before making electrical connections. Failure to do so could result in death or serious injury. Electrically bond boiler to ground in accordance with requirements of authority having jurisdiction. Refer to National Electrical Code, ANSI/NFPA 70. ELECTRIC POWER SUPPLY Run separate 120 volt circuit from separate over current protective device in electrical service entrance panel. This should be a 15 ampere circuit. Locate shut-off switch at boiler. It must be turned off during any maintenance. Connect 120 volt power supply to control leads L1 (HOT) and L2. Run a 14 gauge or heavier copper wire from boiler to grounded connection in service panel or properly driven and electrically grounded ground rod. VENT DAMPER WIRING Boiler is equipped with factory wired harness with 4 pin molex plug, that plugs into 4 pin molex receptacle inside vent damper operator. Vent damper must be connected for boiler to operate. NOTICE Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing. If original wire as supplied with this appliance must be replaced, replace with type 105 C thermoplastic wire or its equivalent. THERMOSTAT INSTALLATION 1. Thermostat should be installed on an inside wall about four feet above the floor. 2. NEVER install a thermostat on an outside wall. 3. Do not install a thermostat where it will be affected by drafts, hot or cold pipes, sunlight, lighting fixtures, televisions, a fireplace, or a chimney. 4. Check thermostat operation by raising and lowering thermostat setting as required to start and stop the burners. 5. Instructions for the final adjustment of the thermostat are packaged with the thermostat (adjusting heating anticipator, calibration, etc.) Set heat anticipator at.2 amps. 24 volt thermostat connects to aquastat terminals T and TV. 15
Figure 11 - Electronic Ignition Control! WARNING Modification, substitution or elimination of factory equipped, supplied or specified components may result in personal injury or loss of life. WIRING DIAGRAMS 16
STARTING YOUR BOILER FILLING SYSTEM WITH WATER Close air vents on all radiation units. Open valves to these units. Verify boiler and expansion tank drain valves are closed. Close drain fitting on air bleed screw. Open valve in line from boiler to expansion tank. Open water inlet to your boiler and leave it open. Start with lowest radiation unit. Open air vent on this unit. When all air has escaped and water starts to flow from vent, close it. Go to next radiation unit, and repeat process. Repeat until you have covered every radiation units in the system (ending up at highest unit in system). If your units have automatic vents, this manual venting is unnecessary but it will speed up the proper fi lling of your system. If your system is closed expansion tank system, you may leave it open to refi ll system automatically as needed. Check temperature pressure gauge. Not position of hand indicating pressure. This should be between 10 and 15 psi. Any lowering of this movable hand below 10 psi. indicates loss of water due to leakage. Automatic fi ll valve should compensate for this. Instructions are packaged with valve. NOTICE Never run water in a hot empty boiler. 17
LIGHTING INSTRUCTIONS! WARNING If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. This appliance is equipped with an ignition device which automatically lights burner. Do NOT try to light this burner by hand. Before operating smell all around appliance area for gas. Be sure to smell next to floor because some gas is heavier than air and will settle to the floor. Use only your hand to turn the gas shutoff valve. Never use tools. If valve will not turn by hand, do not try to repair it, call a qualified service technician. Force or attempted repair may result in fire or explosion. Do not use this appliance if any part has been under water. Immediately call a qualified service technician to inspect appliance and to replace any part of control system and any gas control which has been under water. LIGHTING PROCEDURE FOR BOILER WITH INTERMITTENT PILOT SYSTEM For Your Safety, Read Before Operating!! A. This appliance is equipped with an ignition device which automatically lights the pilot. Do not try to light appliance by hand.! CAUTION WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance. Do not touch any electrical switches; do not use any phone in your building. Immediately call your gas supplier from a neighbor s phone. Follow the gas supplier s instructions. If you cannot reach your gas supplier, call the fire department. F. Remove front panel. G. Rotate the gas control knob clockwise to OFF. Figure 12 - Automatic Gas Valve PRESSURE REGULATOR ADJUSTMENT (UNDER CAP SCREW) INLET PRESSURE TAP INLET GAS CONTROL KNOB OFF ON WIRING TERMINALS (2) OUTLET PILOT ADJUSTMENT (UNDER CAP SCREW) OUTLET PRESSURE TAP GROUND TERMINALS (2) PILOT OUTLET H. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow the safety information What To Do If You Smell Gas. If you don t smell gas, go to next step. I. Rotate gas control knob counterclockwise to ON. J. Turn on all electric power to the appliance. K. Set thermostat to desired setting. L. If appliance will not operate, follow the instructions To Turn Off Gas To Appliance and call your service technician or gas supplier. TO TURN OFF GAS TO APPLIANCE 1. Set the thermostat to lowest setting. 2. Turn off all electric power to the appliance if service is to be performed. 3. Push in gas control knob slightly and turn clockwise to OFF Do not force. B. STOP! Read the safety information above. C. Set the thermostat to lowest setting. D. Turn off all electric power to the appliance. E. This appliance is equipped with an ignition device which automatically lights the pilot. Do not try to light the pilot by hand. 18
OPERATING YOUR BOILER AUTOMATIC GAS VALVE Automatic Gas Valve opens or closes according to heat requirements of thermostat and temperature limit control. It closes if pilot goes out. Each individual control must be operating correctly before any gas can pass to burners. Any one control can hold gas supply from burner regardless of demand of any other control. Figure 13 - Pilot Flame SAFETY PILOT Safety Pilot prevents flow of gas to burner if pilot goes out, or will not ignite. GAS VALVE SAFETY SHUTDOWN TEST Ignition system safety shutoff device must be tested after placing boiler in operation. RELIGHT Electric and gas shall be off for 5 minutes before relighting. THERMOSTAT Keep it set at desired room temperature. If windows are to be opened or heat is not needed, move thermostat pointer to lower setting. NOTICE In event of failure of any component, system will not operate or will go into safety lockout. System is completely self-checking. On every call for heat, each component must be functioning properly to permit operation. Safety lockout system has to be reset by turning thermostat to lowest setting for one minute, then back to normal setting. MAIN BURNER(S) Main burners do not require primary air adjustment and are not equipped with primary air shutters. Main burner flames form sharp blue inner cones in softer blue outer mantel, with no yellow. Puffs of air from blowing on flame or stamping on floor will cause flames to turn orange momentarily. This is not unusual. Remain still when observing main burner flames. If flame appearance is not correct, check main burner orifices, burner throat and flame ports for dust and lint obstruction. It may be necessary to remove rollout shield to observe main burner flames. Replace rollout shield after observation. Refer to Figure 14. Figure 14 - Burner ADJUST PILOT BURNER Pilot flame should surround 3/8 to 1/2 of the pilot sensor. See Figure 16. If flame needs adjusting, do it as follows: 1. Remove screw cover over pilot adjusting screw. 2. Insert small screwdriver and adjust flame as needed. Turn screw counterclockwise to increase flame, clockwise to decrease. 3. Replace screw cover over pilot adjusting screw. ADJUST LIMIT CONTROLS Instructions for each control are included with controls. Settings can be changed. See Control Section page 24. 19
CHECK THERMOSTAT OPERATION A. When set above temperature indicated on thermostat, boiler should ignite. B. Verify thermostat turns boiler off when room temperature reaches selected setting and starts boiler operating when room temperature falls a few degrees. C. After setting limit control to limit setting, check to see if it shuts off gas supply to burners. Turn your thermostat up to call for heat and let boiler run until temperature of water reaches limit setting. Gas valve should shut off and circulator running until thermostat is satisfied, or water cools enough to restart burners through limit control. D. Set thermostat for desired temperature. Conditions in your home and location of thermostat will govern this setting. OPERATING YOUR BOILER 20
OPERATING THE BOILER - SYSTEM START-UP 1 HI TEMP illuminates when boiler water temperature reaches high limit setting. Remains lit until water temperature falls 10. Prevents burner operation while this LED is on. 2 LWCO Active Indicates low water cut-off (LWCO) function of limit control is active. When control is installed with a well, LED is on at all times when control is powered. Important: If control is installed with a well other than Electro-Well, LED will not illuminate indicating control is not providing low water cut-off functionality.! WARNING Burn and scald hazard. Do not add water until boiler has fully cooled. Failure to follow these instructions could result in death or serious injury. 3 LWCO Low Water illuminates if boiler is in low water condition. Limit control prevents burner operation during this condition. Important: Have system checked by qualified service agency prior to resuming operation. 4 ECONOMY Active Indicates thermal targeting function is active and limit control is reducing boiler temperature to conserve fuel. Economy feature is activated using Economy dial. 5 ECONOMY TARGET Economy feature is active, limit control continually sets target temperatures below high limit setting to maximize fuel efficiency. When boiler water reaches target temperature, LED illuminates and burner shuts down. Boiler water will continue to circulate and heat the house as long as thermostat call continues. LED will stay lit until boiler temperature drops below differential set point at which point boiler will be allowed to fire again. Note: LED illuminates regularly during normal boiler operation. 6 LWCO TEST Button To Test Low Water Cut-Off: Press and hold Test/Settings button for 5 seconds. Display will read LWCO. LWCO TEST LCO Red Low Water light will illuminate and burner circuit (B1 and B2) will de-energize. Note: Control must be installed with Electro-Well for low water cut-off functionality. 21
OPERATING THE BOILER - SYSTEM START-UP Burner Will Not Fire No or Insufficient Domestic Hot Water House will not get or stay warm Table 1 - Troubleshooting If installed with indirect water heater, insure end switch in relay box controlling indirect water heater is properly connected to cable 2 (see wiring diagram). This insures domestic water calls are prioritized. If cable 2 is not used, turn Economy Feature OFF. 1. Check for air bound radiators. 2. Check thermostat settings including heat anticipator settings (common on non-digital thermostats. 3. Check Economy settings. Economy feature, much like outdoor reset controls, lowers average boiler temperature, can slow or prevent the house from coming up to temperature. Move to lower setting. 22
SERVICE HINTS EQUIPMENT AND OPTIONAL ACCESSORIES - WHAT THEY DO You may avoid inconvenience and service calls by checking these points before you call for service.! CAUTION WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance. Do not touch any electrical switch; do not use any phone in your building. Immediately call your gas supplier from a neighbor s phone. Follow the gas supplier s instructions. If you cannot reach your gas supplier, call the fire department. IF YOUR SYSTEM IS NOT HEATING OR NOT GIVING ENOUGH HEAT... Possible Cause What to do Thermostat is not set correctly Reset thermostat above room temperature Burner is not operating properly Check flame. If it is yellow, burner is not getting enough air. Or, if flame is blue and noisy and seems to lift off burner, burner is getting too much air. Contact your service technician. No electric power to boiler Check over current protection. Verify electric power supply circuit is ON. Controls out of adjustment Reset according to instructions. Radiators not heating Open radiator vents to expel air. Check flow control valve (if used). It may be in closed position. Circulating pump not running Check over current protection. Check relay operation. Poor electrical contact Check all control terminals and wire joints. Rollout switch blown Have your service agent check heat exchanged for blockage. Replace rollout switch with exact replacement. Blocked vent safety switch blown Have your service agent check venting system and chimney for blockage, or down draft condition. Reset blocked vent safety switch. Vent damper not operating Consult troubleshooting guide in Effikal manual, packaged with vent damper. IF BURNER IS NOISY... Possible Cause What to do Gas input amount is incorrect Contact RELIEF your VALVE service LEAKING agent.... Possible Cause What to do Dirt on seat Open valve manually. Allow water to run and clear valve seat. Water logged expansion tank Drain tank, see instructions. HAVE YOUR SERVICE AGENT CHECK ANY PROBLEM YOU ARE UNABLE TO CORRECT. 23
MAINTAINING YOUR BOILER BURNERS Beginning of heating season visually check pilot end main burner flames. See page 19 SAFETY RELIEF VALVE Test safety relief valve for proper operation. Refer to valve manufacturer s instructions packaged with relief valve. Call Technical Support if manufacturer s instruction are not located. EXPANSION TANK Tank may become waterlogged, or may receive excess of air. Frequent automatic opening of safety relief valve indicates water logging. High boiler temperature accompanied by unusually low radiation unit temperature (and knocking ) indicates excess air in tank. To correct: 1. Close valve between boiler and tank. Drain tank until empty. 2. Check all tank plugs and fittings. Tighten as necessary. 3. Open valve between boiler and tank. Water will rise to normal height in tank if you have automatic fill valve (otherwise, manually refill system). BOILER FLUE PASSAGES Recommend following checked annually by qualified service agent. flue passages burner adjustment operation of controls Before start of each season (or whenever system has been shut down for some time) recheck whole system for leaks and recheck boiler and vent pipe for leaks. Replace or patch any boiler seals that are faulty. VENT PIPE Venting and piping should be checked at least once a season. If vent piping shows any sign of leaking, replace immediately. CLEANING YOUR BOILER AND BURNERS Flue passages between sections should be examined yearly and cleaned if necessary. To clean: Remove burners, pilot, and vent pipe. Remove top and front jacket panels. Remove two screws attaching intermediate front panel to left and right side jacket panels. Remove draft diverter and intermediate front panel as a unit. Carefully remove cerafelt gasket strips. Clean passageways between sections with flexible handle wire brush. Remove dirt from bottom of boiler and from between sections by vacuuming. Verify all flame ports in burners are open and clear. Shake out or blow out all loose dirt in burners. Reseal seams between adjacent sections as necessary with 400 F RTV silicone sealant. Reassemble all parts. Verify tightness of pilot connections and condition of burner flames after reassembly. See Figures 15 and 16. Verify vent pipe connections to chimney are secure and no obstructions are present. CIRCULATOR PUMP ISOLATION VALVES Operate isolation valves in circulator pump flanges manually once or twice per year to prevent valves from becoming stuck in open position Rotate valves from open position to closed position and back to open position. HOUSEKEEPING Keep boiler area clear and free from combustible materials, gasoline and other flammable vapors and liquids. Keep boiler area clear of debris and other materials obstructing flow of combustion and ventilation air. WATER SYSTEM If system is to remain out of service during freezing weather, always drain it completely (water left in to freeze will crack pipes and/or boiler). 24
EQUIPMENT AND OPTIONAL ACCESSORIES! WARNING Burn and scald hazard. Safety relief valve could discharge steam or hot water during operation. Install discharge piping per these instructions. AIR ELIMINATING FITTING (AIR PURGER) Air purger is used to remove excess air from system. It is installed in supply line. It will eliminate air from water before it reaches radiators and bleed off this air. SAFETY RELIEF VALVE Safety relief valve is required on your boiler. Water expands as it is heated. If there is no place for water to expand into, water pressure will build up inside boiler and system. Should this happen, safety relief valve will automatically open at predetermined pressure. This will relieve the strain on boiler and system. Run pipe from relief valve outlet (pipe must be same size as outlet and open end must not be threaded) to open drain, tub or sink, or other suitable drainage point not subject to freezing. Failure to do so may cause water damage or injury should safety relief valve release. EXPANSION TANK Expanding water flows into expansion tank. Tank should be correct size. Tank is filled with air. As water expands it compresses air in the tank to form air pressure cushion. This spring-like cushion serves to maintain correct operating water pressure regardless of water temperature. This assures full measure of water, even in highest radiation unit of system. It also prevents blowing off of safety relief valve. Air in tank in beginning (with system filled with cold water) is sufficient for proper operation. Tank also serves as trap for excess air in system. Air would cause gurgling in pipes and in efficient circulation in radiators if left in system. It is possible for tank to become waterlogged (filled with water). It can also become overfilled with air. This can happen after filling system with new water. Fittings provided on tank and in line to tank are for bleeding off excess water or air. When installing this tank, it is important: 1. Tank be higher than boiler top. 2. Pipe to tank continuously rises up to tank (so air can bubble up to it). DIAPHRAGM TYPE EXPANSION TANK Diaphragm type expansion tank takes place of conventional expansion tank. Carefully read instructions packed with your tank assembly. Tank comes with 10-12 pounds per square inch air charge. This is the same as pressure produced in system by automatic fill valve. When system is first filled, tank will contain little or no water. As water is heated its pressure increases. It expands into tank, compressing air in tank. Compressed air cushion permits water in system to expand as temperature changes. Diaphragm type tank can be mounted on air purger fitting or at any convenient place in supply or return line. 25 MAIN AIR VENT FOR DOWN FLOW SYSTEMS OR DIAPHRAGM TYPE EXPANSION TANK Before system is filled with water, there is air in pipes and radiation units. Some of it will be trapped as system is filled. It is possible to eliminate most of this air through air vent on radiation units. Main air vent will speed and simplify this. Install on highest point in supply main when all radiation is below top of boiler. AUTOMATIC FILL VALVE For a safe, efficient operation, hot water system must be completely filled with water. Adding new water, when needed can be done manually (by use of hand valve in water supply line). Requires regular attention to system s needs. Automatic fill valve accomplishes this without attention. Install in supply line on hot water boilers only. Valve operates through water pressure differentials. It does not require electrical connection. DRAIN VALVE Manual valve provides means of draining all water from boiler and system. It is often installed in 3/4 tapping at bottom of end boiler section. Or it can be installed in tee where return line enters boiler. CIRCULATING PUMP Every forced hot-water system requires circulating pump. Separate pump or zone valve is required for each zone, if you have a two or more zone system. Pump must have capacity to provide circulation required by your system. Pump is connected into main just ahead of boiler. It is also wired to electrical system. VENT DAMPER This product is automatic, motorized stack damper developed to increase efficiency of heating system by reducing standby losses from heating apparatus and conditioned air space. Damper closes chimney vent when burner is off and fully opens it when combustion is required.
EQUIPMENT AND OPTIONAL ACCESSORIES ROLLOUT SWITCH (FLAME ROLLOUT SAFETY SHUTOFF) Rollout switch is temperature-sensitive fuse link device. Located on boiler base just outside fire box. In event of heat exchanger flueway blockage causing flame to roll out of fire box, fuse does not change in appearance when blown. If rollout switch blows, it must be replaced with exact replacement. Check heat exchanger flueways for blockage when restoring system to operating condition. DO NOT operate system without rollout switch. BLOCKED VENT SAFETY SWITCH (BLOCKED VENT SAFETY SHUTOFF) Blocked vent safety switch is manual reset disc thermostat with fixed setpoint (340 F), and normally closed contacts. It is located at relief opening of integral draft diverter. In event of chimney or venting system blockage causing products of combustion to spill out of relief opening, blocked vent safety switch disc heats up and blocked vent safety switch contacts open, shutting down flow of gas to main burners by removing power to gas valve. In event blocked vent safety switch contacts open, reset button on back of switch will pop up. Blocked vent safety switch must be reset manually, after switch has cooled off, by pushing reset button down. Check venting system and chimney for blockage when restoring system to operating condition. DO NOT operate boiler without blocked vent safety switch. 26
Date Service Performed Company Name & Tech Initials Company Address & Phone #
DUNKIRK BOILERS 2201 Dwyer Avenue, Utica NY 13501 web site: www.ecrinternational.com